Rhino 660 Heads & Cams
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Rhino 660 Mudbuster Hot Cam
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rhino 660 mudbuster
Mudbuster: single-cam motor. Improved acceleration, more bottom-end, and no top-end loss. Must use Raptor 660 center intake valve spring. All other valve springs stock. Uses stock auto-decompression mechanism. Fits Grizzly 660 as well.

Rhino 660 Stage 1 Hot Cam
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rhino 660 mudbuster

Single cam moto: True drop-in cam. No valve spring change needed. Improved acceleration, more bottom end, and no top-end loss. Uses stock valve springs and rockers. Uses stock auto decompression mechanism. Fits Grizzly 660 as well.